In vitro study of probiotic Lactobacillus helveticus: Antibacterial effects on Porphyromonas gingivalis. - Bakri, Husna Hazirah; Syed Abdul Rahman, Syarifah Nur; Abd Halim, Adyani Azizah; Baharuddin, Nor Adinar; Said Gulam Khan, Hasnah Begum; Zainal Abidin, Zamirah; Arzmi, Mohd Hafiz; Munadziroh, Elly; Wan Harun, Wan Himratul Aznita (PLoS ONE, 2025)